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MrBungle · 16th Mar 2019, 12:05 am

Interesting. I am actually having some noise trouble with this. The power sensor is an AD8307 and I'm using a 12-bit MCP3208 ADC to pull the power reading off it. Spent two days trying to work out why I couldn't get a totally linear reading, playing with the ADC and the software and it turns out that the AD8307 is picking up the switching hash off my LED desk lamp! I didn't work that out until Sat when I got some time to work on it in daylight. I only tested the power sensor standalone in daylight too. Power sensor is now going in its own box!

16th Mar 2019, 12:05 am	#8
MrBungle Dekatron Join Date: Jun 2016 Location: London, UK. Posts: 3,687	Re: Hammond box mounting and RF tightness Interesting. I am actually having some noise trouble with this. The power sensor is an AD8307 and I'm using a 12-bit MCP3208 ADC to pull the power reading off it. Spent two days trying to work out why I couldn't get a totally linear reading, playing with the ADC and the software and it turns out that the AD8307 is picking up the switching hash off my LED desk lamp! I didn't work that out until Sat when I got some time to work on it in daylight. I only tested the power sensor standalone in daylight too. Power sensor is now going in its own box!